Bearing for earth working tools



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W. E. GOBLE BEARING FOR EARTH WORKING TOOLS original Filed Jan. 18 1932 patented @cto 3l, 519635 rot/29ers EEAERJG EARTH WQIBRKMG TQMNLS Willmann E. iilioble, Fresno, Calii., ossignor ci one llrallf to Kyle und Company, Fresno, Calif., a

corporation Application .lanumy litt, 1932. Serial No. %,219

' nessun Renewed August 22, 129333 s entre. (ci. sosa-rei My invention relates to an earth working tool and more specincally to onev in which the esrth digger rotates such es a disc cultivator, and in which it is desirable to have a bearing that reu 5 sists the entrance of sand and dirt thereto.

The object li have accomplished is the forme.-

tion of a bearing for an earth working tool which can be kept greased or thoroinshly oiled and which will resist and exclude the entrence l@ oi dirt, dust, or sand into the wearing partsfo the bearing.

lin the drawingherewith Fig.' 1 is a sectional view' oi a portion of a disc cultivator showing the arrangement of the bearing, the axle, and the w tube im.: the discs, with other features which are apparent. Fig. 2 shows a lock washer.

3 is a cross sectional view of the device shown in l slung the line 3-3 in Fig. i. Fig. t is a cross sectional viewalong section line 4 4 in 2@ Fig, i, Fig, s is a :aww wer. Fig. t is a plain top view of the disc sssembly in a trarne.

Fig. i is en end view of the axle.

Reig to the dra, li have constructed a treme lo which has sides and ends which may g1g, be in the to of a rhomboid or a parallelogram, end which y have a plurality of cross sup ports il. Extending laterally within this frame and diy attached thereto is axle 12. The ends of the axle are squared as shown in Fig. l 3@ and it is attached to the frame yso that the said axle i i 1.. t; ot turn. I have provided floating bearings 13 which are adapted to turn on the axle n either end thereof. Means for holding oating bearings 13 in the position near the 35 end or the axle consist of stop ring ,14 at one end which is attached to the axle a spaced distance i'rom the end, thus forming a stop to prevent the bearing 13 `from sliding endwise toward the center of the axle. At the opposite end o! the assembled axle and bearing, a stop 15 is likewise positioned, said stop 15 being attached to tube 16 within said tube and a spaced distance from the end. Tube 16 is intended as the support fordiscs 17. It -encircles the axle 45 and bearings 13. The discs are attached to tube 16 as follows: v

.At one end' oi tube 18 a. stop 1,8 is attached. Discs 17 are formed with a hole through the center thereof o! sumcient size so that tube 16 can pass therethrough.` Tube 16 is threaded through one o! said discs, then through a spacer 19, then through another disc, then `through another spacer and disc until `the discs and spacers approximately extend alternately theV length of 65 tube 16. Nut 20 which is adapted to screw on the end of tube 16 is then screwed against the lest disc, clamping the assembled discs and spacers solidly with tube 16. For the purpose of locking said assembled discs; spacers, and tube 16 tov gether, 1 have used lock nut 21 to bear against 6@ regular nut 20. A set screw 22 can be adapted to lock the locls nut. It will be noted that when thus assembled, the disc, spacer, and tube 16 assembly is adapted to rotate on axle 12 through the medium of bearings 13 which are between the said axle and tubeld.

To take up the end play of the discs li have rigidly attached an annularring 2e to axle l2 near the lateral center thereof, and have attached an annular ring 25 tothe inside of tube 16 preferably by means of a screw 26. The annular ring 2e is/'of'such diameter that it can rotate within tube 16 and the opening in annular ring 25 is such that axle 12 can be rotated therein. Said annular rings 2li and 25 are positioned so that thrust washer' 27 encircles axle 12 and is positioned betweenannular 'rings 2li and 25. 1t is Y noted that the discs4 are uniformly arranged on tube 16 with the concave surfaces facing the same direction, and likewise the convex surfaces are facing in the opposite direction. In using the disc assembly the pressure of the earth against the concave sides of the discs will cause the disc as sembly to bear in a direction along the lineal line or diameter of tube 16 trom the concave face toward the convex face thereof. Annuler rings 24 and 25, forming the thrust bearing, are arranged with reference to each other so that the approach ing bearing faces of the two'rings will normally press toward each other when the disc assembly is in use as above noted.

y Axle 12 is hollow. At either end thereof are cap screws and- 31 which are adapted to hold the axle to frame 10. vCap screw 31 is bored its lateral length and an alemite grease cup 32 is placed therein for the purpose of permitting oil or grease to be injected to the inside of the axle. By means ofholes 33 through the wall of the axle to the hollow portion thereof said grease or oil is fed to the bearings. A cap at one end of said assembly is adapted to contain packing 41 and to cover the one end of the assembled tube 18,'besring 13, and axle 12. At the opposite end packing 45' is placed within the end o f tube 16 and is held therein by means of plate 47 and washer 46. It will be noted that axle 12, bearings 13, and the thrust bearing composed of annular rings 24 and 25 and thrust washer 27. are all encased within tube 16 so that it is impossible for dust ordirt to enter therein except at the ends of said tube 16 which are inclosed by the packing and caps, and Icoverings hereinbefore referred to. The discs are locked to the tubular housing 16 by means of a pin 50'extending through the disc and into the spacers or other means between which the discs are clamped.

While the drawing represents a disc cultvator, other earth working tools which function by rotating can be substituted.

I claim as new and ask for Letters Patent:

l. An earth working tool comprising a tubular housing adapted to attach a plurality of earth working tools thereto, a xed axle adapted for the tubular housing to rotate thereon, packing means at each end of said assembled tubular housing and axle adapted to exclude dust and dirt therefrom, and a' thrust bearing near the approximate center of the assembled housing and axle consisting of an annular stop member attached to the axle, and an annular stop member attached to the inside of the housing, said stop members being positioned to cooperate in limiting the lateral movement of the housing relative to the axle, a chamber within the tubular housing and adjacent to the thrust bearing, said chamber being adapted to hold a lubricant.

maaar@ 2. In an earth Working tool having a fixed axle, `r

a tubular housing adapted to rotate on the fixed axle, and means at each end of the housing adapted to exclude dirt therefrom, of a thrust bearing intermediate between the ends of the axle, said thrust bearing consisting of a stop attached to the axle, and an annular stop attached to the inside of the housing and approximately concentric therewith, said stops being positioned so that adjacent faces thereof engage, the tubular housing adjacent to the thrust bearing being adapted to hold a lubricant.

3. lin an earth Working tool having a fixed axle, a housing adapted to have earth Working elements attached thereto, means for adapting the housing rto be rotated on said axle, a thrust bearing intermediate of the ends of the axle consisting of a stop on the axle and an annular stop on the inside of the housing positioned to engage with the stop on the axle when the axle and housing are assembled, the housing being adapted to hold a lubricant adjacent to the thrust bearing.

VVLLAM E. GOBLE.

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